Program.cs

using ECommerceProject.Data;
using ECommerceProject.Repositories;
using ECommerceProject.Services;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using Microsoft.AspNetCore.Authentication.Google;
using Microsoft.AspNetCore.Authentication.Cookies;
var builder = WebApplication.CreateBuilder(args);


// Google Login -------------------------------------
var configuration = builder.Configuration;
builder.Services.AddAuthentication().AddGoogle(googleOptions =>
{
    googleOptions.ClientId = configuration["GoogleKeys:ClientId"];
    googleOptions.ClientSecret = configuration["GoogleKeys:ClientSecret"];
});
//configuration of session------------------------------------------------- 1
builder.Services.AddSession(options =>
{
    options.IdleTimeout = TimeSpan.FromMinutes(5);
    options.Cookie.IsEssential = true;
});

// Add services to the container.
var connectionString = builder.Configuration.GetConnectionString("DefaultConnection");
builder.Services.AddDbContext<ApplicationDbContext>(options =>
    options.UseSqlServer(connectionString));

/*builder.Services.AddDefaultIdentity<IdentityUser>(options => options.SignIn.RequireConfirmedAccount = true)
    .AddEntityFrameworkStores<ApplicationDbContext>();*/
builder.Services.AddDatabaseDeveloperPageExceptionFilter();

/*builder.Services.AddDefaultIdentity<IdentityUser>(options => options.SignIn.RequireConfirmedAccount = true)
	.AddEntityFrameworkStores<ApplicationDbContext>();*/
builder.Services.AddControllersWithViews();

// adding configurations for role
builder.Services.AddIdentity<IdentityUser, IdentityRole>(options => options.SignIn.RequireConfirmedAccount = true)
                 .AddDefaultUI()
                 .AddEntityFrameworkStores<ApplicationDbContext>()
                 .AddDefaultTokenProviders();
builder.Services.AddAuthorization(options =>
{
    options.AddPolicy("readpolicy",
        builder => builder.RequireRole("Admin", "Customer"));
    options.AddPolicy("writepolicy",
        builder => builder.RequireRole("Admin"));
});


builder.Services.AddScoped<IMainCategoryRepository, MainCategoryRepository>();
builder.Services.AddScoped<IMainCategoryService, MainCategoryService>();
builder.Services.AddScoped<ISubCategoryRepository, SubCategoryRepository>();
builder.Services.AddScoped<ISubCategoryService, SubCategoryService>();
builder.Services.AddScoped<IProductRepository, ProductRepository>();
builder.Services.AddScoped<IProductService, ProductService>();
builder.Services.AddScoped<IBrandRepository, BrandRepository>();
builder.Services.AddScoped<IBrandService, BrandService>();
builder.Services.AddScoped<ICartRepository, CartRepository>();
builder.Services.AddScoped<ICartService, CartService>();
builder.Services.AddScoped<IAddressRepository, AddressRepository>();
builder.Services.AddScoped<IAddressService, AddressService>();
builder.Services.AddScoped<IOrderRepository, OrderRepository>();
builder.Services.AddScoped<IOrderService, OrderService>();
builder.Services.AddScoped<IPromoCodeRepository, PromoCodeRepository>();
builder.Services.AddScoped<IPromoCodeService, PromoCodeService>();



var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseMigrationsEndPoint();
}
else
{
    app.UseExceptionHandler("/Home/Error");
    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    app.UseHsts();
}
// for session-------------------------------2
app.UseSession();

app.UseHttpsRedirection();
app.UseStaticFiles();

app.UseRouting();

app.UseAuthentication();
app.UseAuthorization();


app.MapControllerRoute(
    name: "default",
    pattern: "{controller=Home}/{action=Index}/{id?}");
app.MapRazorPages();

app.Run();